Develop Bugs

My G3 D855 won't boot

I'm rooted and have made a have few changes to my phone in general, but now it won't start up. It gets past the LG logo but then gets stuck at a black screen with the LED's cycling colours.
I've tried to factory reset it but it still gets stuck at the black screen. How do I fix this?

I has this a few days ago.
To fix it you will need LG mobile drivers and LG PC Suite installed.
Power off your G3. Then start it in download mode by holding the volume down button and connect a USB cable to your phone. The screen should show download mode. Connect your phone to your computer and start LG PC Suite. Don't worry if PC Suite doesn't recognise your G3. Go to the mobile device menu and select restore upgrade errors. PC Suite should download the latest firmware and install it. You will be back to a factory reset but your G3 will be working again ☺

saitch76 said:
I has this a few days ago.
To fix it you will need LG mobile drivers and LG PC Suite installed.
Power off your G3. Then start it in download mode by holding the volume down button and connect a USB cable to your phone. The screen should show download mode. Connect your phone to your computer and start LG PC Suite. Don't worry if PC Suite doesn't recognise your G3. Go to the mobile device menu and select restore upgrade errors. PC Suite should download the latest firmware and install it. You will be back to a factory reset but your G3 will be working again ☺
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Ok thanks! I'll try this out now and let you know if it works.

jamespat93 said:
Ok thanks! I'll try this out now and let you know if it works.
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Hit the Thanks button if I helped you out!

saitch76 said:
Hit the Thanks button if I helped you out!
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Click to collapse
I tried to fix the update errors but it said this update is not supported by Mac OS. I don't have a windows PC to use so what can I do now?

I don't have a Mac so not sure if this will work but search the G3 forums for advice on flashing a .kdz firmware directly to your phone. Make sure you find a .kdz that matches your G3 variant i.e. 16 or 32gb. Sorry but don't know if there is a Mac tool to do this. Good luck.

saitch76 said:
I don't have a Mac so not sure if this will work but search the G3 forums for advice on flashing a .kdz firmware directly to your phone. Make sure you find a .kdz that matches your G3 variant i.e. 16 or 32gb. Sorry but don't know if there is a Mac tool to do this. Good luck.
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Ok thanks I'm gonna try your steps on my friends PC, if it doesn't work then I'll look for advice. Appreciate your help!

jamespat93 said:
Ok thanks I'm gonna try your steps on my friends PC, if it doesn't work then I'll look for advice. Appreciate your help!
Click to expand...
Click to collapse
No worries. Post back if no luck.
---------- Post added at 05:02 PM ---------- Previous post was at 04:43 PM ----------
It might be worth looking here for Mac drivers etc
http://www.mylgphones.com/download-and-install-the-usb-drivers-for-lg-g3-on-windows-and-mac.html

saitch76 said:
No worries. Post back if no luck.
---------- Post added at 05:02 PM ---------- Previous post was at 04:43 PM ----------
It might be worth looking here for Mac drivers etc
http://www.mylgphones.com/download-and-install-the-usb-drivers-for-lg-g3-on-windows-and-mac.html
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Thanks, Ill check that link out.
I'm finally on a PC and went into download mode but now my phones stuck at 0% doing a firmware update. It says don't disconnect the USB until the process is complete but I think I'm going to have to
When I did click fix software errors it said there were no errors to fix but I don't think I have all the drivers installed yet.
When I try go to download mode it keeps taking me to the firmware update screen and stays at 0%. Also the drivers aren't fully installing on this computer for some reason.

jamespat93 said:
Thanks, Ill check that link out.
I'm finally on a PC and went into download mode but now my phones stuck at 0% doing a firmware update. It says don't disconnect the USB until the process is complete but I think I'm going to have to
When I did click fix software errors it said there were no errors to fix but I don't think I have all the drivers installed yet.
Click to expand...
Click to collapse
Install the LG united mobile driver first then LG PC Suite. Might be useful to reboot the Windows machine after that. Try having PC Suite running when you connect your G3. PC Suite might nag you about being unable to connect to your G3. Just cancel that and select restore upgrade errors. PC Suite should download the latest firmware before it flashes it to your phone. Check that your G3 is in download mode before you connect it to the Windows machine.
I'm assuming you've checked obvious things like turning off any firewall software that might block outgoing connections...

saitch76 said:
Install the LG united mobile driver first then LG PC Suite. Might be useful to reboot the Windows machine after that. Try having PC Suite running when you connect your G3. PC Suite might nag you about being unable to connect to your G3. Just cancel that and select restore upgrade errors. PC Suite should download the latest firmware before it flashes it to your phone. Check that your G3 is in download mode before you connect it to the Windows machine.
I'm assuming you've checked obvious things like turning off any firewall software that might block outgoing connections...
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Click to collapse
Tried those things too...for some reason the pc could only download 2 out of 4 drivers. Also my phone wont let me stay on the download mode screen. It comes up for around 2 seconds then just goes to a firmware update screen.

jamespat93 said:
Tried those things too...for some reason the pc could only download 2 out of 4 drivers. Also my phone wont let me stay on the download mode screen. It comes up for around 2 seconds then just goes to a firmware update screen.
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What is the OS on the Windows machine?

saitch76 said:
What is the OS on the Windows machine?
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I tried with windows xp and windows 7. I won't have access to the PC until later, any tips for what I can do on mac? I can't seem to find a mac flash tool.

jamespat93 said:
I tried with windows xp and windows 7. I won't have access to the PC until later, any tips for what I can do on mac? I can't seem to find a mac flash tool.
Click to expand...
Click to collapse
There are drivers and PC Suite for Mac on the LG website. That was all I needed to recover my G3 on my PC. I would try installing the unified drivers and PC Suite again. Start up PC Suite. Put your G3 in download mode and connect it to your Mac.
If that doesn't work and the unified drivers and PC Suite won't install on your friends Windows machine then I would run chkdsk and the system file checker.

saitch76 said:
There are drivers and PC Suite for Mac on the LG website. That was all I needed to recover my G3 on my PC. I would try installing the unified drivers and PC Suite again. Start up PC Suite. Put your G3 in download mode and connect it to your Mac.
If that doesn't work and the unified drivers and PC Suite won't install on your friends Windows machine then I would run chkdsk and the system file checker.
Click to expand...
Click to collapse
I've got the drivers and PC suite for mac but anytime I try to 'fix update errors' a message comes up saying 'cannot run updating. Check device status and retry'. Then when I update the suite to the latest version, the 'fix update errors' option disappears from the menu. Ok I'll try those out on my friends PC when I have the chance.

jamespat93 said:
I've got the drivers and PC suite for mac but anytime I try to 'fix update errors' a message comes up saying 'cannot run updating. Check device status and retry'. Then when I update the suite to the latest version, the 'fix update errors' option disappears from the menu. Ok I'll try those out on my friends PC when I have the chance.
Click to expand...
Click to collapse
Are you selecting Restore Upgrade Errors?

saitch76 said:
Are you selecting Restore Upgrade Errors?
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Click to collapse
well on my mac it comes up as
View attachment 2891684
and when I click it this message comes up
View attachment 2891685

fixed it!
I finally fixed it! In the end I had to flash a stock rom to my phone, that's the only thing that would work. Again, thanks for all your help!

jamespat93 said:
I finally fixed it! In the end I had to flash a stock rom to my phone, that's the only thing that would work. Again, thanks for all your help!
Click to expand...
Click to collapse
Cool. V10g firmware seems to fix a number of issues.

jamespat93 said:
I finally fixed it! In the end I had to flash a stock rom to my phone, that's the only thing that would work. Again, thanks for all your help!
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please help me!!! , i have the same problem
1. you wrote
"Tried those things too...for some reason the pc could only download 2 out of 4 drivers. Also my phone wont let me stay on the download mode screen. It comes up for around 2 seconds then just goes to a firmware update screen. "
i have the same problem, which os system you flash the stock rom? windows 7? i have win 7.
how do you installed the missing drivers ? 2 of 4 drivers?
2. can you give me please the link to the rom stock and to the relevant software?
3. hot you flash the stock rom ? which software?
2. can you explain in detail what is the Installation steps? [when to connect the phone, which software, what need to see on the software)
thanks a lot

Can't use LG Flash tool

I tried to flash latest 10L firmware, but I always get the messages Problem with communication between cell phone and PC. I did everything as instructed, selected Normal flash, but it won't work. I installed needed drivers, but when I reboot to Downloading mode, there is Exclamation sign in device manager. What could be the problem?

Did you change the port to com41?
Also are you using windows 8? If you are you need to disable signature verification.

I don't know how to change port to com41. I am using Windows 7.

TwinHeadedEagle said:
I don't know how to change port to com41. I am using Windows 7.
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Click to collapse
It's in the guide that you said you followed. Open your device manager in windows and right click on the lg device that shows up. Next hut advanced and change the port to com41 and then click ok.

I did that, and it still shows the same message.

Bump
Sent from my LG G3 using Tapatalk

TwinHeadedEagle said:
I tried to flash latest 10L firmware, but I always get the messages Problem with communication between cell phone and PC. I did everything as instructed, selected Normal flash, but it won't work. I installed needed drivers, but when I reboot to Downloading mode, there is Exclamation sign in device manager. What could be the problem?
Click to expand...
Click to collapse
Hi did you fix it?
I encountered the same problem. Thanks.

I didn't fix it, problem is still there.
Sent from my LG G3 using Tapatalk

Please state the exact link to the guide you're using, your phone model number and windows version.

Thanks for responding.
I tried to follow several guides, but none of them works.
I think I tried this one first --> http://forum.xda-developers.com/showthread.php?t=2785089
LG G3 International 32gb D855
v10i currently installed
Phone rooted with Bump TWRP

Bump.

Did you install the latest LG drivers for your phone? I don't know why this didn't occur to me earlier but that plays a big part in the PC seeing your phone.

Yes, I have driver. PC Suite works, everything works, but Flash tool doesn't.
Sent from my LG G3 using Tapatalk

Could this be connected with bump twrp. Maybe it is blocking this somehow.
Sent from my LG G3 using Tapatalk

Problem solved, I was using different PC and it worked

TwinHeadedEagle said:
Thanks for responding.
I tried to follow several guides, but none of them works.
I think I tried this one first --> http://forum.xda-developers.com/showthread.php?t=2785089
LG G3 International 32gb D855
v10i currently installed
Phone rooted with Bump TWRP
Click to expand...
Click to collapse
You've got to boot into download mode and then use the LG FLash Tool 2014. There's one error stating there is an error with a connection, just ignore it and watch your phone screen! If it tells you stuff like the current version and the version it is about to install, just let it sit and wait till it reboots automatically.
The reason I am saying is because you say "Problem with communication between cell phone and PC" and it looks like the error that is supposed to show up.
Could you please re-do the process, maybe re-install the LG drivers and use LG FLash Tool again. If you encounter any error either make a screenshot or type the EXACT error message in here.
Good luck

I solved the problem.
Sent from my LG G3 using Tapatalk

For all who is experiencing the same thing problem is in 64bit OS but it is not a rule. People reported that they were succesfully flashed their devices on win7 x64. If you want to be sure use x86 windows and it should be working.

please help me to save my phone...

I have D855 Model (32gb) and i want to download v10i firmware for my phone..But i am unable to find the download link for it..Please help me...

http://www.mylgphones.com/latest-lg-phones-firmware-update-model-version-date
give thanks!

Vivasanti said:
http://www.mylgphones.com/latest-lg-phones-firmware-update-model-version-date
give thanks!
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thanks a lot buddy...i am trying to upgrade by using lg flash tool but is taking a lot of time...is this an issue?? its been 10 minutes and it is just 1% complete

Im not sure how long its spose to take, head over to this thread and ask.....
http://forum.xda-developers.com/showthread.php?t=2785089

facing a big problem..
Hi, I tried to upgrade my Lg g3 D855 (32gb) to V10L by using the file D855v10L.kdz by using flash tool 2014. It does not go past 4% and i have tried it deveral time. I followed the procedure to words but problem remains and now my lg g3 just show the download mode only. when i press the power buttomn the phone automatically shows me the firmware update screen..I have also used the TOT file method and in that i have faced the error of " FAILED TO GO INTO DOWNLOAD MODE" but in reality the phone is in download mode.I am using windows 8.1 64 bit...ANY SOLUTION???

http://forum.xda-developers.com/lg-g3/help/lg-flash-tool-t2905299
Try another PC?
Also have you tried using Repair using LgPCsuite?

Vivasanti said:
http://forum.xda-developers.com/lg-g3/help/lg-flash-tool-t2905299
Try another PC?
Also have you tried using Repair using LgPCsuite?
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Click to collapse
yes it worked..i used a pc with windows 7 64 bit.. and it worked flawlessly

Secure booting error on LG e989_0608

I have an LG e989_0608 which has this error.
It was purchased on ali express, so i am not sure about the info.
here is an example listing:
http://www.aliexpress.com/item/E980...48d8365fb7cf716-1459179376583-05342-eub6yrrBy
I am not exactly certain which device this is.
Some said F240, some said e988.
enclosed below are pictures of the error and the device backside.
I tried several methods of flashing, and nothing seems to actually get anything going in Download mode.
is there a universal img file for CWM\TWRP I can put on there the same way we did on samsung devices ?

By your description you have an e989. Then, go to Hyelton's thread in the general section, download the files for the e989. There you will find the instructions to flash back to stock using LG tool.

g0at1 said:
By your description you have an e989. Then, go to Hyelton's thread in the general section, download the files for the e989. There you will find the instructions to flash back to stock using LG tool.
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I tried what he suggests, it keeps failing to flash in download mode, says I should "restart to resume upgrade"

heathenasparagus said:
I tried what he suggests, it keeps failing to flash in download mode, says I should "restart to resume upgrade"
Click to expand...
Click to collapse
I'm not sure that's the same, but when I need to return to stock, after the extraction of the kdz there's an error.
However, behind the error screen the upgrading process continues. Is that what happens?

g0at1 said:
I'm not sure that's the same, but when I need to return to stock, after the extraction of the kdz there's an error.
However, behind the error screen the upgrading process continues. Is that what happens?
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Click to collapse
doesn't look like it.
is there a util i can run on a linux or mac machine for this? like heimdall but for lg phones

heathenasparagus said:
doesn't look like it.
is there a util i can run on a linux or mac machine for this? like heimdall but for lg phones
Click to expand...
Click to collapse
@hyelton do you have any suggestions to help solve this problem?

heathenasparagus said:
I tried what he suggests, it keeps failing to flash in download mode, says I should "restart to resume upgrade"
Click to expand...
Click to collapse
Is the phone in download mode correct? And using a USB 2.0 port?

hyelton said:
Is the phone in download mode correct? And using a USB 2.0 port?
Click to expand...
Click to collapse
yes and yes

Help! LGUP Unkown MODEL LG G4

Hey all, I think I broke my G4 h811 , but not at all because I can access to download mode, the problem is that when I try to open LGUP or LG flash tools, my LG appears as UNKNOW MODEL, and because of that I can´t install the kdz file, I tried to re install all the drives and so on, I am working in a win 10 laptop. Someone that can help me. Thanks!!! I will be waiting for a answer.

Enable usb debugging mod in settings>developer options. And also make sure that you have all the lg drivers installed and working. I am sure you will be fine.

fncalderong said:
Hey all, I think I broke my G4 h811 , but not at all because I can access to download mode, the problem is that when I try to open LGUP or LG flash tools, my LG appears as UNKNOW MODEL, and because of that I can´t install the kdz file, I tried to re install all the drives and so on, I am working in a win 10 laptop. Someone that can help me. Thanks!!! I will be waiting for a answer.
Click to expand...
Click to collapse
Try using LGBridge and clicking the update error recovery.
You are coming from an international rom right?

change port number. or task manager adb kill

mdau said:
Enable usb debugging mod in settings>developer options. And also make sure that you have all the lg drivers installed and working. I am sure you will be fine.
Click to expand...
Click to collapse
Thanks for answering, Unfortunately I can´t access to android just Download mode

Vseprz said:
Try using LGBridge and clicking the update error recovery.
You are coming from an international rom right?
Click to expand...
Click to collapse
I am coming from a rooted T-Mobile rom, all happened because I change the file build.prop :/, I tried LGBridge but nothing

ToreqLex said:
change port number. or task manager adb kill
Click to expand...
Click to collapse
thanks for answering, I already changed port number to 41, what do you mean with task manager adb kill ?

fncalderong said:
I am coming from a rooted T-Mobile rom, all happened because I change the file build.prop :/, I tried LGBridge but nothing
Click to expand...
Click to collapse
And you no longer have recovery mode?

Vseprz said:
And you no longer have recovery mode?
Click to expand...
Click to collapse
I can access by VOL- & Power with factory data reset options, I tried but nothing change

fncalderong said:
I can access by VOL- & Power with factory data reset options, I tried but nothing change
Click to expand...
Click to collapse
So using the hardware buttons, and clicking yes through the factory reset confirmation does not boot you into recovery mode? Did you format your internal memory?

Vseprz said:
So using the hardware buttons, and clicking yes through the factory reset confirmation does not boot you into recovery mode? Did you format your internal memory?
Click to expand...
Click to collapse
using hardware buttons and clicking yes the phone just restarted and that´s it. I didn´t format my internal memory. I was trying to fix my phone by using kdz files but the problem is that the programs as lg flash tool and LGUP don´t recognize the model of my lg g4.

fncalderong said:
using hardware buttons and clicking yes the phone just restarted and that´s it. I didn´t format my internal memory. I was trying to fix my phone by using kdz files but the problem is that the programs as lg flash tool and LGUP don´t recognize the model of my lg g4.
Click to expand...
Click to collapse
What firmware were you on? What message did LGBridge say when you tried error update recovery?

I have the same problem with my H815 and Windows 10. All drivers are set up correctly. In device manager, I can see the device and ADB Device, but LGUP won't recognize my G4. Obviously, LGUP is buggy...
Is there any better tooling to upgrade to a more recent ROM? Otherwise, I really would have to change to CM13 - upgrading is very easy and not any nasty USB stuff what in the end may not work at all...

Vseprz said:
What firmware were you on? What message did LGBridge say when you tried error update recovery?
Click to expand...
Click to collapse
I am porting the h811 20i, LGBridge say just that there are not update errors that can be recovered

Maheshwara said:
I have the same problem with my H815 and Windows 10. All drivers are set up correctly. In device manager, I can see the device and ADB Device, but LGUP won't recognize my G4. Obviously, LGUP is buggy...
Is there any better tooling to upgrade to a more recent ROM? Otherwise, I really would have to change to CM13 - upgrading is very easy and not any nasty USB stuff what in the end may not work at all...
Click to expand...
Click to collapse
But I can´t even access to android :/

fncalderong said:
Hey all, I think I broke my G4 h811 , but not at all because I can access to download mode, the problem is that when I try to open LGUP or LG flash tools, my LG appears as UNKNOW MODEL, and because of that I can´t install the kdz file, I tried to re install all the drives and so on, I am working in a win 10 laptop. Someone that can help me. Thanks!!! I will be waiting for a answer.
Click to expand...
Click to collapse
Download this driver. This will help you.
I am new to this forum so I can not link, but you have to look for LG driver version 3.14.1
I had the same problem today and it helped me.
Good luck

JanMarty said:
Download this driver. This will help you.
I am new to this forum so I can not link, but you have to look for LG driver version 3.14.1
I had the same problem today and it helped me.
Good luck
Click to expand...
Click to collapse
Thanks, but I installed the drive and nothing is still Unknow model for LGUP :/